dpi change will trigger ResizeLayout callback for render path

Documentation/WickedEngine-Documentation.md

@@ -825,7 +825,7 @@ The custom GUI, implemented with engine features
 [[Header]](../WickedEngine/wiGUI.h) [[Cpp]](../WickedEngine/wiGUI.cpp)
 The wiGUI is responsible to run a GUI interface and manage widgets. 
 
-<b>GUI Scaling:</b> To ensure correct GUI scaling, GUI elements should be designed for the current window size. If they are placed inside `RenderPath2D::ResizeBuffers()` function according to current screen size, it will ensure that GUI will be scaled on a Resilution change event, which is recommended.
+<b>GUI Scaling:</b> To ensure correct GUI scaling, GUI elements should be designed for the current window size. If they are placed inside `RenderPath2D::ResizeLayout()` function according to current screen size, it will ensure that GUI will be scaled on a Resolution or DPI change event, which is recommended.
 
 ### wiEventArgs
 [[Header]](../WickedEngine/wiWidget.h) [[Cpp]](../WickedEngine/wiWidget.cpp)

Editor/Editor.cpp

@@ -206,7 +206,10 @@ void EditorComponent::ResizeBuffers()
 		hr = device->CreateRenderPass(&desc, &renderpass_selectionOutline[1]);
 		assert(SUCCEEDED(hr));
 	}
-
+}
+void EditorComponent::ResizeLayout()
+{
+	__super::ResizeLayout();
 
 	// GUI elements scaling:
 
@@ -724,6 +727,7 @@ void EditorComponent::Load()
 	shaderButton->SetTooltip("Reload shaders from the default directory...");
 	shaderButton->SetColor(wiColor(255, 33, 140, 180), wiWidget::WIDGETSTATE::IDLE);
 	shaderButton->SetColor(wiColor(255, 100, 140, 255), wiWidget::WIDGETSTATE::FOCUS);
+	shaderButton->font.params.size -= 2;
 	shaderButton->OnClick([=](wiEventArgs args) {
 
 		wiRenderer::ReloadShaders();

Editor/Editor.h

@@ -120,6 +120,7 @@ public:
 	const wiGraphics::Texture* GetGUIBlurredBackground() const override { return renderPath->GetGUIBlurredBackground(); }
 
 	void ResizeBuffers() override;
+	void ResizeLayout() override;
 	void Load() override;
 	void Start() override;
 	void FixedUpdate() override;

Tests/Tests.cpp

@@ -23,9 +23,9 @@ void Tests::Initialize()
 	ActivatePath(&renderer);
 }
 
-void TestsRenderer::ResizeBuffers()
+void TestsRenderer::ResizeLayout()
 {
-	__super::ResizeBuffers();
+	__super::ResizeLayout();
 
 	float screenW = wiRenderer::GetDevice()->GetScreenWidth();
 	float screenH = wiRenderer::GetDevice()->GetScreenHeight();

Tests/Tests.h

@@ -10,7 +10,7 @@ class TestsRenderer : public RenderPath3D_Deferred
 public:
 	void Load() override;
 	void Update(float dt) override;
-	void ResizeBuffers() override;
+	void ResizeLayout() override;
 
 	void RunJobSystemTest();
 	void RunFontTest();

WickedEngine/RenderPath.cpp

@@ -1,13 +1,24 @@
 #include "RenderPath2D.h"
 #include "wiRenderer.h"
+#include "wiPlatform.h"
+
+void RenderPath::ResizeLayout()
+{
+	dpi = wiPlatform::GetDPI();
+}
 
 void RenderPath::Update(float dt)
 {
 	if (wiRenderer::ResolutionChanged() || !initial_resizebuffer)
 	{
 		ResizeBuffers();
+		ResizeLayout();
 		initial_resizebuffer = true;
 	}
+	if (dpi != wiPlatform::GetDPI())
+	{
+		ResizeLayout();
+	}
 }
 
 void RenderPath::Start() 

WickedEngine/RenderPath.h

@@ -9,10 +9,13 @@ class RenderPath
 private:
 	uint32_t layerMask = 0xFFFFFFFF;
 	bool initial_resizebuffer = false;
+	uint32_t dpi = 0;
 
 protected:
-	// create resolution dependant resources
+	// create resolution dependant resources, such as render targets
 	virtual void ResizeBuffers() {}
+	// update resolution dependent elements, such as elements dependent on current monitor DPI
+	virtual void ResizeLayout();
 public:
 	std::function<void()> onStart;
 	std::function<void()> onStop;

WickedEngine/wiVersion.cpp

@@ -9,7 +9,7 @@ namespace wiVersion
 	// minor features, major updates
 	const int minor = 41;
 	// minor bug fixes, alterations, refactors, updates
-	const int revision = 3;
+	const int revision = 4;
 
 	const std::string version_string = std::to_string(major) + "." + std::to_string(minor) + "." + std::to_string(revision);